@import "reset.less";
h1{
    text-align: center;
    padding: 50px  0;
    font-size: 32px;
    font-weight: bold;
    color: #333;
}
#waterfall{
    column-count: 3;
    width: 1200px;
    margin: 0 auto;
    column-gap:15px;
    >span{
        margin-bottom: 20px;
        display: block;
        overflow: hidden;
        img{
            display: block;
            width: 100%;
            transform: rotate(4deg);
            opacity: 0.9;
            filter:saturate(150%);
        }
        &:hover{
            img{
                transform: rotate(0deg);
                transform: scale(1.05);
                transition: all 200ms linear;
                opacity: 1;
                filter:saturate(100%);
            }
        }
    }
}